Vibrator.



PATENTED JUNE 4, 1907.

A. J. STEGKER.

VIBRATOR.

APPLICATION FILED OCT. 24, 1906.

a 9 3 ucutur 3513 I Atlomcgs ALFRED .i. STEOKER, or nr'rnorr,

:IICHIGAN, ASSIGNOR TO EUREKA VIBRATOR (30., OF DETROIT, MICHIGAN, A CORPORATION OF MICHI- GAN.

VIBRA Application filed October 24,

To all whom it may concern:

Be it known that I, ALFRED J. S'rncicnn, a citizen of the United States, residing at Detroit, in the county of Wayne, State ofM ichigan, have invented certain new and useful Improvements in Vibrators; and 1 do declare the following to' be a full, clear, and exact description of the inventionfsuch as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawin s, and

' to the figures of reference marked thereon,

which form a part of this specification.

This invention relates to a vibrator, especially designed for the application of vibratory massage, andconsists in the constrnc tion and arrangement of parts hereinafter more fully set forth and claimed.

The object of the invention is to provide a compact, simple and efficient vibrator adapted to'be operated through the rotation of an electric motor, or other propulsive (ll'Vlrft, whereby the desired rotary motion may be attained, and wherein the arrangement is such as to enable the production of a strong and rapid vibration which may be transmitted to the parts to he treated through the medium of a suitable applicator.

The above object is attained by the structure illustrated in the accompanying drawin ,inwhich:

igure 1 an elevation of a vibrator cmbodylng my invention. Fig. 2 IS a central,

longitudinal section as on line 2-2 of Fig. 1,

the motorappearing in elevation. Fig. .3 is an enlarged section through one cnrl of the case and through the bearing cups which ems brace the ball on the vibrator stem which is connected with the motor shaft, other parts broken away. Fig. 4 is a view of the arts which form the bearing for the gyratory ball disassembled, the end of the case which supports said parts and the gland or screw cap which confines them in place, being 111,: section. Fi 5 is an elevation of the acumil nated end 0 the case, the remaining portion l of thecase being broken away. 6 is a plan of the inner ball cup. Fig. 7 is a plan 5 view of the ball. Fig. 8 is a plan of the outer l ball cup. Fig. 9 is a perspective View of one l end of the coupling sleeve which connccts'the stein of the atory ball with the shaft of the motor. 10 is a perspective view of the opposite end of said sleeve showing the Specification of Letters Patent.

energ', not shown.

TOR.

Patented June 4, 1907. 1906. Serial No. 340,276.

eccentric aperture therein which receives the stem of the gvratory ball.

Referring to the characters of reference, 1 designates a suitable case, preferably cylindrical in form, having aprojecting conical end Mounted in said case is a suitable electric motor 3 whose shal't'4 extends axially of the case. Upon one end of said shaft is the usual commutator 5. Mounted in the case are the carbon brushes 6 which engage said commutator and are held in working relation therewith, by means of the backing s rings 7. The brushes 6 are insulated from t e case by the embracing sleeves of insula tion 8. Connected electrically with said brushes are the wires 9 of the electric circuit which supply the propulsive current to the motor from any suitable source of electric U )0 the inner end of the motor shaft is fitte a coupling sleeve 10 having in one end a concentric socket 11 which receives the end of the motor shaft and in which said shaft is sccurcd by the transverse pin 12. In the other end of said sleeve is an eccentric socket 13 which stands at a slightangle to thraxis of the sleeve.

In the outer end of the conical portion 2 ol' the case is a concavcd seat 14 adapted to re- (Pl\'(' :1 concavo-convox bearing cup 15. in the margin of the beveled seat 14 is a slot 16 with which a similar slot 17 in the margin of said cup registers. Adapted to lie within the cup 15 is a ball 18 having an inwardly cxtcndin; stem 19 which passes through the vntral opening 20 in said cup, the inner end of said stcm entering the ecccntric socket 13 in thc'slccvc '10 on the end of the motor shaft. Projecting from the side ol the ball 18 is a pin 21 which engages in the slot 17 of the cup 15 and in the slot 16 of the conical scat 14, whereby said ball is held from rotation, but is permitted to g vrate within said cup as the inner end of its stem 19 is caused to describe a circle by the rotation of the sleeve 10. The ball is Conlincd in the cup 15 by means of the embracingouter cup 22 which fits over the outwardly projecting portion of saidiiall and is conlincd in ilacc by the gland 23iwhich screws onto the t rcadml end 24 of the conical portion 2 of the case. By means of said gland, the proper tension may be placed upon the ball L5 to prevent it chattering and all wear between the bearing cups and the ball may be taken up. A set screw 25 which engages the margin of the gland enables it to be looked after adjustment. Formed in the gyratory ball in axial alinement with its stem 19 is a tapped aperture 26 which registers with the central opening 27.

through the outer cup 22 adapted to receive the threaded stem 28 of the applicator 29 which is screwed into said ball to retain said l moved at pleasure.

It will now he understood that a rotation of the motor shaft will cause the ball 13 to rock or gyrate in its seat because of the fact that its stem is eccentric to the axis of said shaft, thereby causing the applicator to describe a circle about its axis which, owing to the high speed of the motor shaft becomes a rapid vibration producing a massaging effect on the surface to which the applicator is ap- )llCll. i The case is supported by a suitable handle 30 through which the conductor wires 9 pass. By means of 'said. handle, the vibrator may be easily held and the applicator applied to the surface to be treated.

I laving'thus fully set forth my invention,

what I claim as new andfldesire'to secure by.

Letters Patent, is

1. Ina massaging apparatus, the combination of a suitable case, a shaft journaled therein, means for rotating said shaft, a vi bratory stem I in substantially .longitudinal I alinement witn'tne shaft, means for connectingthe meeting ends of the stem and s'haft' o eccentrically a ball upon the outer end of said stem, heaiin cups embracing said ball the outer end of t e case having a. concaved seat in which the inner bearing cup is seated,

a gland screwing onto the outer end of said 5 case and engaging the outer of said cups and an applicator attached to said ball.

2. In a massaging apparatus, the combination of a case, a longitudinal shaft {ournaled therein, means for rotating said s raft, 50'

a longitudinally extending vibratory stem, means for connectim the ends of the stem and shaft eccentrically, a ball on the outer end of said stem, bearing cups supported in the end of the case and embracing said ball, a 55 gland confining said cups means for preventing a rotation ,of the ball in said cups but allowing a gyration of said ball therein and an applicator connected with 'said ball.

3. In a massaging apparatus, the combi- 6 0- nation of a suitable case, a rotary sh'aftjournaled therein, means for rotating said shaft, a sleeve having in one end a concentric socket ,in which the end of said shaft is rigidly cured, the other end of said sleeve having an .65

eccentric socket therein, a vibratory stem loosely-seated. in said eccentric socket and supported to gyrate in the end of the case, and an applicator attached to said stem.

In testimony whereof, I sign this specifica- 7o 7 tion in the presence of two witnesses.

ALFRED J. STECKER. Witnesses:

E. S. Winzarlnn, I. G. HOWLETT. 

